Abstract This paper describes the development of Pipe Penetrating Radar (PPR), the underground in-pipe application of GPR, a non-destructive testing method that can detect defects and cavities within and outside mainline diameter (>18 in / 450mm) non-metallic (concrete, PVC, HDPE, etc.) underground pipes. The method uses two or more high frequency GPR antennae carried by a robot into ...

In 2005, Pure Technologies (Pure), a provider of various structural monitoring and leak-detection technologies, set about to develop a pipeline assessment tool that could monitor and report on the condition of pre-stressed concrete cylinder pipes (PCCP) utilized in municipal water and sewer systems. The tool’s competitive advantage would be accurate assessment decoupled from the need to ...

The studies summarized in this paper and the following paper in this issue demonstrate that the impact-echo method can be used for integrity testing of concrete pipes, mine shaft liners, and tunnel liners in contact with soil or rock. Results obtained from numerical (finite element) studies are presented in this paper (Part I), and results obtained from experimental studies on mine shaft liners ...

Owner: Town of Stettler Installer: Woooden Construction Ltd. Designer: Associated Engineering Alberta Ltd. Location: 57 Street, Stettler, Alberta As part of a sanitary main replacement project, the Town of Stettler was faced with the challenge of replacing an aging storm sewer line under very low cover conditions. ...

Service: SoundPrint AFO Client: Baltimore City Project Date: 2012 Location: Baltimore, MD Type of Pipeline: Water Transmission Main Diameter: 54-inch (1350mm) Pipe Material: PCCP Baltimore City features 130 miles of Prestressed Concrete Cylinder Pipe (PCCP), 15 percent of which is Class IV PCCP installed in the 1970s. This particular class of pipe has been prone to early ...

Commercial introduction of ductile iron pipe (DIP) began in the mid-1950s and was established as the most frequently selected material of choice for ferrous pressure pipe by the early 1970s. Due to the widespread use of DIP during a large expansion of pipeline infrastructure in the 1970s, there are many thousands of miles of pressurized DIP in operation today. Water and wastewater utilities ...

In late 2015, the City of Hamilton, Pure Technologies (Pure) and Robinson Consultants worked together to perform an external investigation of a pipe section in the Woodward Greenhill Transmission Main (WGTM) to gain understanding of what was causing degradation in a specific geographical area. A 2014 condition assessment ...

Geosythetic lining works include the installation of a 1,825m2 of 1.5mm smooth HDPE liner over the concrete roof of one existing and one new reservoir. Works included Fusion and extrusion welding techniques Sealing of HDPE liner to vertical concrete surface of 6nr. access hatches using a stainless steel battening system Fabrication and sealing of 16 nr. pipe boots around ...

Service: Electromagnetic Testing Client: Tarrant Regional Water District (TRWD) Type of Pipelines: Transmission Mains Diameter: 72, 84 and 90-inch Pipe Material: PCCP Length: ~1 mile The Tarrant Regional Water District (TRWD) is a raw water supplier that serves ten counties in north central Texas. Most of the 1.5 million people served by the District are in Tarrant County, ...

Lining works to refurbish the existing tank farm secondary containment bund and HFO Tank 4 are ongoing at Great Island CCGT project. Lining Tech are contracted in to Balfour Beatty Ireland on this design and build project for the client Tank 4 Works Installation of 1,140m2 of 1mm HDPE leak detection liner to the floor of HFO tank 4 Fabrication and installation ...

A series of lateral dynamic loading tests were conducted on a rigid concrete cap supported by nine 273-mm-diameter steel pipe piles in a square group. The piles were driven 13.7 m into a layered deposit of overconsolidated clay. A linear inertial mass vibrator applied horizontal constant-rate frequency sweep and steady state loadings from frequencies above the first mode resonance to frequencies ...

Service: Sahara Leak Detection Client: Dallas Water Utilities (DWU) Department of Public Works Type of Pipeline: Raw Water Transmission Main Diameter: 108-inch Pipe Material: PCCP Length: 7.3 miles The City of Dallas Water Utilities (DALW) currently draws its raw water from six sources: the Elm Fork of the Trinity River and Lakes Ray Roberts, Lewisville, Grapevine, Ray ...

The best relationships are built on trust and responsiveness. Collaboration between The Washington Suburban Sanitary Commission (WSSC) and Pure Technologies began in earnest nearly a decade ago, and continues today as the two partners work together as one unified team to ensure the overall health of ...

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